Try facebook for this sort of query. Do you know for sure
there is a readable gravestone there?
I did look at a gravestone index for Clare by an English Co. but nothing for Shanakyle or Kilrush.
There is another possibility www.igp-web.com
they have a photo archive for gravestones.
has a gravestone index as well.
which includes photo's. Did not see anything for Kilrush.
You don't given any idea of what time period you maybe looking at. Did look for Michael in 1901 Census, one age 57
2.1 Leadmore, Dedicated Electoral District Kilrush but
although he said married there is no one else at home?
There is no Patricia listed.